415 lines
9.0 KiB
C
415 lines
9.0 KiB
C
/*********************************************************
|
|
* Copyright (C) 1998-2013, 2020 VMware, Inc. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation version 2 and no later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
|
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*********************************************************/
|
|
|
|
#include "driver-config.h"
|
|
|
|
#define EXPORT_SYMTAB
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/version.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/poll.h>
|
|
|
|
#include <linux/netdevice.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/mm.h>
|
|
#include "compat_skbuff.h"
|
|
#include <linux/if_ether.h>
|
|
#include <linux/sockios.h>
|
|
#include "compat_sock.h"
|
|
|
|
#define __KERNEL_SYSCALLS__
|
|
#include <asm/io.h>
|
|
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/file.h>
|
|
|
|
#include "vnetInt.h"
|
|
|
|
|
|
#if defined(CONFIG_PROC_FS)
|
|
|
|
static int VNetProcMakeEntryInt(VNetProcEntry *parent, char *name, int mode,
|
|
void *data, VNetProcReadFn *fn,
|
|
VNetProcEntry **ret);
|
|
static void VNetProcRemoveEntryInt(VNetProcEntry *node, VNetProcEntry *parent);
|
|
|
|
static VNetProcEntry *base = NULL;
|
|
|
|
|
|
/*
|
|
*----------------------------------------------------------------------
|
|
*
|
|
* VNetProc_Init --
|
|
*
|
|
* Initialize the vnets procfs entries.
|
|
*
|
|
* Results:
|
|
* errno.
|
|
*
|
|
* Side effects:
|
|
* None.
|
|
*
|
|
*----------------------------------------------------------------------
|
|
*/
|
|
|
|
int
|
|
VNetProc_Init(void)
|
|
{
|
|
return VNetProcMakeEntryInt(NULL, "vmnet", S_IFDIR, NULL, NULL, &base);
|
|
}
|
|
|
|
|
|
/*
|
|
*----------------------------------------------------------------------
|
|
*
|
|
* VNetProc_Cleanup --
|
|
*
|
|
* Cleanup the vnets proc filesystem entries.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side effects:
|
|
* None.
|
|
*
|
|
*----------------------------------------------------------------------
|
|
*/
|
|
|
|
void
|
|
VNetProc_Cleanup(void)
|
|
{
|
|
VNetProcRemoveEntryInt(base, NULL);
|
|
base = NULL;
|
|
}
|
|
|
|
|
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 10, 0)
|
|
/*
|
|
*----------------------------------------------------------------------
|
|
*
|
|
* VNetProcShow --
|
|
*
|
|
* Show the contents of this procfs node. We bounce through this
|
|
* into the read function callback that was given to us when the
|
|
* entry was created.
|
|
*
|
|
* Results:
|
|
* errno.
|
|
*
|
|
* Side effects:
|
|
* None.
|
|
*
|
|
*----------------------------------------------------------------------
|
|
*/
|
|
|
|
static int
|
|
VNetProcShow(struct seq_file *p, // IN:
|
|
void *v) // IN:
|
|
{
|
|
char *buf = (char *)__get_free_page(GFP_KERNEL);
|
|
if (buf != NULL) {
|
|
VNetProcEntry *ent = p->private;
|
|
char *start;
|
|
int eof;
|
|
buf[ent->fn(buf, &start, 0, PAGE_SIZE, &eof, ent->data)] = '\0';
|
|
seq_printf(p, buf);
|
|
free_page((unsigned long)buf);
|
|
return 0;
|
|
}
|
|
return -ENOMEM;
|
|
}
|
|
|
|
|
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 18, 0)
|
|
/*
|
|
*----------------------------------------------------------------------
|
|
*
|
|
* VNetProcOpen --
|
|
*
|
|
* Open a procfs node.
|
|
*
|
|
* Results:
|
|
* errno.
|
|
*
|
|
* Side effects:
|
|
* None.
|
|
*
|
|
*----------------------------------------------------------------------
|
|
*/
|
|
|
|
static int
|
|
VNetProcOpen(struct inode *inode, // IN:
|
|
struct file *file) // IN:
|
|
{
|
|
return single_open(file, VNetProcShow, PDE_DATA(inode));
|
|
}
|
|
|
|
/* Our procfs callbacks. We only need to specialize open. */
|
|
static struct file_operations fops = {
|
|
.open = VNetProcOpen,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
#endif
|
|
#endif
|
|
|
|
|
|
/*
|
|
*----------------------------------------------------------------------
|
|
*
|
|
* VNetProcMakeEntryInt --
|
|
*
|
|
* Make an entry in the vnets proc file system.
|
|
*
|
|
* Results:
|
|
* errno. If errno is 0 and then ret is filled in with the
|
|
* resulting proc entry.
|
|
*
|
|
* Side effects:
|
|
* None.
|
|
*
|
|
*----------------------------------------------------------------------
|
|
*/
|
|
|
|
int
|
|
VNetProcMakeEntryInt(VNetProcEntry *parent, // IN:
|
|
char *name, // IN:
|
|
int mode, // IN:
|
|
void *data, // IN:
|
|
VNetProcReadFn *fn, // IN:
|
|
VNetProcEntry **ret) // OUT:
|
|
{
|
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 10, 0)
|
|
VNetProcEntry *ent = kmalloc(sizeof *ent, GFP_KERNEL);
|
|
if (ent != NULL) {
|
|
if (mode & S_IFDIR) {
|
|
ent->pde = proc_mkdir(name, NULL);
|
|
} else {
|
|
ent->data = data;
|
|
ent->fn = fn;
|
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 18, 0)
|
|
ent->pde = proc_create_single_data(name, mode, parent->pde,
|
|
VNetProcShow, ent);
|
|
#else
|
|
ent->pde = proc_create_data(name, mode, parent->pde, &fops, ent);
|
|
#endif
|
|
}
|
|
if (ent->pde != NULL) {
|
|
*ret = ent;
|
|
return 0;
|
|
}
|
|
kfree(ent);
|
|
}
|
|
return -ENOMEM;
|
|
#else
|
|
VNetProcEntry *ent = create_proc_entry(name, mode, parent);
|
|
if (ent != NULL) {
|
|
ent->data = data;
|
|
ent->read_proc = fn;
|
|
*ret = ent;
|
|
return 0;
|
|
}
|
|
return -ENOMEM;
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
*----------------------------------------------------------------------
|
|
*
|
|
* VNetProcRemoveEntryInt --
|
|
*
|
|
* Remove a previously installed proc entry.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side effects:
|
|
* None.
|
|
*
|
|
*----------------------------------------------------------------------
|
|
*/
|
|
|
|
void
|
|
VNetProcRemoveEntryInt(VNetProcEntry *node, // IN:
|
|
VNetProcEntry *parent) // IN:
|
|
{
|
|
if (node != NULL) {
|
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 10, 0)
|
|
proc_remove(node->pde);
|
|
kfree(node);
|
|
#else
|
|
remove_proc_entry(node->name, parent);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
*----------------------------------------------------------------------
|
|
*
|
|
* VNetProc_MakeEntry --
|
|
*
|
|
* Make an entry in the vnets proc file system.
|
|
*
|
|
* Results:
|
|
* errno. If errno is 0 and ret is non NULL then ret is filled
|
|
* in with the resulting proc entry.
|
|
*
|
|
* Side effects:
|
|
* None.
|
|
*
|
|
*----------------------------------------------------------------------
|
|
*/
|
|
|
|
int
|
|
VNetProc_MakeEntry(char *name, // IN:
|
|
int mode, // IN:
|
|
void *data, // IN:
|
|
VNetProcReadFn *fn, // IN:
|
|
VNetProcEntry **ret) // OUT:
|
|
{
|
|
return VNetProcMakeEntryInt(base, name, mode, data, fn, ret);
|
|
}
|
|
|
|
|
|
/*
|
|
*----------------------------------------------------------------------
|
|
*
|
|
* VNetProc_RemoveEntry --
|
|
*
|
|
* Remove a previously installed proc entry.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side effects:
|
|
* None.
|
|
*
|
|
*----------------------------------------------------------------------
|
|
*/
|
|
|
|
void
|
|
VNetProc_RemoveEntry(VNetProcEntry *node)
|
|
{
|
|
VNetProcRemoveEntryInt(node, base);
|
|
}
|
|
|
|
|
|
#else /* CONFIG_PROC_FS */
|
|
|
|
|
|
/*
|
|
*----------------------------------------------------------------------
|
|
*
|
|
* VNetProc_Init --
|
|
*
|
|
* Initialize the vnets procfs entries.
|
|
*
|
|
* Results:
|
|
* errno.
|
|
*
|
|
* Side effects:
|
|
* None.
|
|
*
|
|
*----------------------------------------------------------------------
|
|
*/
|
|
|
|
int
|
|
VNetProc_Init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
*----------------------------------------------------------------------
|
|
*
|
|
* VNetProc_Cleanup --
|
|
*
|
|
* Cleanup the vnets proc filesystem entries.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side effects:
|
|
* None.
|
|
*
|
|
*----------------------------------------------------------------------
|
|
*/
|
|
|
|
void
|
|
VNetProc_Cleanup(void)
|
|
{
|
|
}
|
|
|
|
|
|
/*
|
|
*----------------------------------------------------------------------
|
|
*
|
|
* VNetProc_MakeEntry --
|
|
*
|
|
* Make an entry in the vnets proc file system.
|
|
*
|
|
* Results:
|
|
* errno. If errno is 0 and ret is non NULL then ret is filled
|
|
* in with the resulting proc entry.
|
|
*
|
|
* Side effects:
|
|
* None.
|
|
*
|
|
*----------------------------------------------------------------------
|
|
*/
|
|
|
|
int
|
|
VNetProc_MakeEntry(char *name,
|
|
int mode,
|
|
void *data,
|
|
VNetProcReadFn *fn,
|
|
VNetProcEntry **ret)
|
|
{
|
|
return -ENXIO;
|
|
}
|
|
|
|
|
|
/*
|
|
*----------------------------------------------------------------------
|
|
*
|
|
* VNetProc_RemoveEntry --
|
|
*
|
|
* Remove a previously installed proc entry.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side effects:
|
|
* None.
|
|
*
|
|
*----------------------------------------------------------------------
|
|
*/
|
|
|
|
void
|
|
VNetProc_RemoveEntry(VNetProcEntry *parent)
|
|
{
|
|
}
|
|
|
|
#endif /* CONFIG_PROC_FS */
|